My HM betta Comet got severe fin rot about 2 weeks ago which took half his tail in a single day. I treated him for in a 1.5 gallon tank with bottled water for 10 days with salt and did 100% changes daily. His tail soon started showing clear regrowth which has now started to darken as it gets filled in with color.
It's been 4 days since the salt treatment ended, but he is still in bottled water with 100% water changes and stress coat daily. I am also adding a 1/2 dose of bettafix to prevent the fin rot from coming back.
When can I move him back to his temporary 5 gallon tank? I am starting to cycle his 20 gallon, but it won't be ready for at least 6 weeks. (Maybe longer since I keep messing things up.) My tap water has about 1ppm ammonia in it, and even though ammo chips can lower the ammonia to about .20-.15 ppm, they can't get rid of it completely. If I put him into the 5 gallon, I'm scared that the poor water quality will cause the fin rot to return. Bottled water is expensive though and using that with daily water changes for 2 months is a lot of work. Will the fin rot come back if I move him